Apparatus for flanging holes in tubular articles.



n0. 693,l77. v Patented-Feb. n, I902.

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APPARATUS FOR FLANGING HOLES IN TUBULAR ARTICLES.

"(Applicafion filed m. 12, 1901.

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No. 693,07. Patented m. n, I902.

J. P. summon. APPARATUS FOR FLANGING HOLES IN TUBULABARTICLES.

(Application filed Apr; 18, 1901.)

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N0. 693,!77. Patented Feb. u, I902.

J. P. summon.

APPARATUS FOR FLANGING HOLES IN TUBULAR ARTICLES.

.(Applicationfiled Apr. 12, 19.01.] (No Model.) Y 3 Sheets-Sheet 3.

V UNrTED STATES- PATENT OFFICE. 1

JAMES P. sNEDno OF BARBERTON, o1-1Io, Ass1eNoE, BY MESNE ASSIGN- MENTS, TO THE STIRLING COMPANY, or JERSEY CITY, NEW JERSEY, A

CORPORATION OF NEW JERSEY.

APPARATUS FOR FLANGlNG HOLES lN TUBULAR ARTICLES.

SPECIFICATION formingpart of Letters Patent No. 693,177, dated February 1 1, 1902.

l I Application filed April 12, I901. 1-8I'IFL1N0. 55,545. (No model.)

To all whom it ma concern.- I, g

Be it known that I, JAMEs P. SNEDDON,a resident of Barberton, in the county of Sn 1nlnit and State of Ohio, have invented a new 5 and useful Improvement ,in Apparatus for Flanging Holes in Tubular Articles; and I do hereby declare the following to be a full, clear,

and'exact description thereof.

, My invention relates to apparatus for flang- IO ingthe Wallssurroundingthe holes in wroughtmetal boiler-headers or other tubular articles;

and its object is to provide apparatus for this purpose which is adapted for turning said flanges either inward or outward, as desired,

serted in holes through the rear walls of said headers, and corresponding holes are formedin the front walls to permit either of V the z 5 cleaning of the tubes or their removal in certain types of boilers, such as the Niclausse boiler. By reason of the walls of the header being formed of comparatively thin sheet or plate metal it is necessary to form a flange 0 around these holes in order tosecure a proper seat for the water-tubes therein or to provide a suitable seat for the handholds which close the openings in the front walls. In certain types of boilers the water-tubes are arranged in staggered relation, and the headers must follow this form and are what is usually termed serpentine in shape, Also in other boilerssuoh as the Niclausse boiler, wherein an outer water-tube and an inner circulating- 40 tube are emp1oyedit is necessary to provide these headers with diaphragms, so as to divide the chamber in the headerinto two com partrnents or passages, one of which communicates with the outer water-tubes and the 45,0ther with the inner circulating-tubes, the

diaphragm serving to separate the two currents of circulation in said header,or the uptake and the downtake, as they are called. 13y reason of the construction of these wroug ght-metal headers difficulty has been experienced in introducing the flanging-tool in the header to properly flange the holes header, making it difficult to insert proper flanging apparatus therein. In any form of header where the flanges are to be turned outward the Hanging-tool must be insertedthrough the opposite hole, and inasmuch as this is still unflanged a proper-sized tool for flanging the hole on the opposite sideisdiffi-- cult of use, and in all headers when the flanges are to be turned inward difficulty has been experienced in providing proper internal supports therefor.

c The object of my invention is to provide proper apparatus which is capable of flanging the holes on both sides of the header and which can be adapted to turn the flanges either inward or outward, and it is operative.

as well on headers provided with diaphragms as those which are not so provided and on all tubular shapes having holes which must be To these ends it consists of a suitable die or support for the header, in combination with a plunger or punch and a ball or other separate part which can be inserted in the header or other tubular body and be forced by the plunger through the holes therein into suitable recesses or openings in the die or support.

The'invention also com prises the use of certain internal supports in case the flanges are to be turned inward.

The invention also comprises the use of a specially-formed ball for use on headers hav- I ing diaphragms or othertubular bodies st-ricted cross-area.

In the accompanying drawings, Figure l is a vertical section showing my invention of re adapted to turn outward the flanges on a header unprovided with a diaphragm. Fig. 2 is a sectional detail illustrating the invention applied to a header having a diaphragm. Fig. 3 is avertical sectional view illustrating the invention applied to turn the flanges inward in a header unprovided with a diaphragm. Fig. 4 is a sectional detail illustrating the invention applied to a header provided with a diaphragm and wherein the flanges around the holes on one side are turnedinward and those on the opposite side are turned outward, and Fig. 5 is a side elevation of the apparatus with a plurality or gang of plungers or punches.

Referring to Fig. 1, 1 represents a suitable bed die or support provided with one or more holes or recesses 2 and having recesses or cavities 3, which form suitable die-cavities formed in itsupper face around the holes or recesses 2. 4 represents a plunger or punch which may be actuated by any suitable mechanis1n--such, for instance, as the piston 5, working in the power-cylinder 6; but a cam or eccentric or any other suitable mechanism may be employed. 7 represents the flanging implement or element, which in the particular modification shown is spherical in shape, the plunger 3 being provided with a concave lower end, as shown at 8, which seats itself on the ball 7 and centers the same.

The header 9 is formed in the usual or any desired manner, and its usual form is rectangular in cross-section, and it may be serpentine or of any other form; but in any event the upper and lower walls 10, which form the front and rear faces of the header when in use, are flat and substantially parallel and provided with the alining holes 11. In most forms of boilers the water-tubes are inclined, and inasmuch as the headers stand in a vertical position the holes 11 in the opposite walls thereof must be on an incline, as shown, in order to aline with the water-tubes. Consequently the upper face of the bed die or support 1 will be formed inclined, as shown; but in case the header is for a boiler having horizontal tubes the holes 11 will be directly opposite each other, and the upper face of the die 1 will be horizontal, and in any event the upper face of said bed die or support will be made to conform to the shape of the header. The header thus formed is placed upon the bed-die with the openings 11 directly over the recesses or holes 2 in the bed die orsupport. The ball 7 is then placed in position in said header, over one of the holes 11 in the lower wall thereof, as shown in Fig. 1, and the plunger-t is then projected through the hole ll in the upper wall of the header against the ball 7 and forces the same through the hole 11 in the lower wall thereof down into the recess or opening 2 in the beddic, thereby Hanging outward the metal surrounding the hole 11, as shown in Fig. 1. The spherical shape of the flanging device 7facilitatcs the placing of the same in the header, as it is immaterial in whatposition it rests over the hole 11, and it readily centers itself with reference to the plunger and the opening 2 in the bed-die. After all the holes on one side of the header have been flanged the said header is turned over and when the holes are on an incline, as shown, also turned end for end and the operation repeated on the holes on the opposite side.

In Fig. 2 the headert) is shown as provided with a diaphragm 12, which diaphragm is provided with the openings 13, in line with the openings 11 in the front and rear faces of said header, which is the common form ofheader used in the Niclausse boiler. By reason of the restricted space between said diaphragm 12 and the walls 10 of the header a spherical body of sufficient size to properly flange the holes in the walls of the header may be inca pable of use therein. Consequently the ball 7 is flattened off on its upper side, as shown at 14, said ball being about one-third more than a hemisphere. This ball is placed in position in the header, as shown, and the plunger brought against the flattened face 14 thereof and forces the same through the opening in the headerwall in the manner describedin connection with Fig. 1. The plunger in this modification need not be provided with the concave end 8, as shown in Fig. 1,

although such concave end will do no harm. If the transverse dimensions of the header are such as to permit the insertion of a spherical body between the diaphragm and the header-walls, such a spherical body will preferably be used in the modification shown in Fig. 2, because it requires no care or attention in positioning the same over the openings 11.

In Fig. 3 the invention is shown as adapted to turn the flanges inward on a header unprovided with a diaphragm. The header is supported on an internal die or support 15, which is provided with the recesses or holes 16 and with the die-cavities 17, formed in the upper face around said openings. The ball or Hanging element 7 is placed over the openings 11 in the header and by means of the plunger 4 is forced through said openings, turning the metal surrounding said holes inward to form the flanges, as shown. the header is provided with a diaphragm, the support 15 must be of such thickness that it will fit in the space between the diaphragm 12 and the side walls 10 of the header, as shown in Fig. 4. If it is desired to turn the flanges on both sides inward, the holes on one side thereof are flanged in the manner shown in Fig. 3, and the header is then slipped off the support 15 and again placed on the same with the opposite side up, and in case the openings 11 are formed on an inclinc,as shown, it will also be turned end for end before being placed on the support 15, and the operation, as described, will be repeated on the holes on that side. In case the header is supplied with a diaphragm, as shown in Fig. 4, the ball 7, with the 'llattened'side, will pref- In case erably be used in order to permit its ready removal from the inside of the header. In case it is desired to turn the-flanges on one side inwardand those on the opposite side out-ward, theheader will be supported upon the beddie 1, as shown in Fig. 4, and will also have the internal support or die 15 to support the upper wall thereof, and the-ball or flanging implement is forced downthrough the hole in the'upper wall thereof and through theopening 16 in'said support, 'and in case the hole in the lower wall is to be formed of the same size said ball or implement will also be forced throughthe hole in the lower wall thereof, as

indicated in Fig. 4. This'procedure will. be followednot only when theheader is provided witha diaphragm, as shown in Fig. 4, but also when it has no diaphragm. The'holes 13 in' 1 the'diaphragm are slightly larger-than the flanged-out holes in the walls ofthe header and permit the ready'passage of the flanging ball orjimplement 7. two opposite sides of the header are to be formed of different sizes, as is sometimes the case, then one ball or implement 7 would be forced through the holev in the upper wall thereof and then removed from the header and a similar ball or implement of a difierent size.

apparatus is shown, 1 representing the bed die or support having the inclined upper face 20, and 21 representing a cross-head which is reciprocated by any suitable mechanism. This cross-head'carries a series of plungers 0r punches 4:, 'said plungers differing in length, as shown, to correspond to the number of holes iii the bed die or support and in the header placed thereon. A- corresponding number of balls or implements 7 will be used with said plungers and bed-die.

' By these means all the holes on one side of the header will be flanged at a single operation.

The openings in the bed-die 1 need not pass entirely through the same, it being sufficient that the die be supplied with recesses of such depth as to contain the ball- 7 or other flanged body. So, too, the openings 16 on the internal die 15 need not pass entirely through the same, except in case the flanges are to be,

turned in on one side and out on the'yother side, as illustrated in Fig. 4, in which case the holes 16 must pass through the support 15 in order to permit the passage of the flanging-body 7 and plunger 4 to flange the holes in the lower wall of the header.

In case the holes in the a While I have shown either a spherical or flattened ball as the flan ging implement, I desire itunderstood that my invention isnot limited thereto", as any body of suitable size and form for the purpose intended may be used, the only requisite being that said body shall be separate from the plunger and of such size that it can be insertedin the header and of such form that it will properly shape the flanges around the holes in the walls therein.

I also wish it understood that my invention v .is not limited to the flanging of holes in the walls of. boilerheaders, but is applicable as well to all tubular metal articles having holes in their walls.

What I claim, and desire to secure by Letters Patent, is-- 1. In apparatus for Hanging wrought-metal tubular bodiesprovided with holes in their opposite side walls, the combination of a die or support having a recess therein, a separate said tubular body and placed over a hole in one of the side walls thereof, and a plunger adapted to be inserted through a hole in the opposite side wall and force the body or implement through the hole over which it is placed.

2. In apparatus for Hanging wrought-metal body or implement adapted to be inserted in I tubular bodies provided with holes in their opposite side walls, the combination of a die or support having a recess therein, a ball adapted to be inserted in the tubular body and placed over-a hole in one of the side walls thereof, and a plunger adapted to be inserted through a hole in the opposite side wall and force the ball through the hole over which it is placed.

3. In apparatus for flanging wrought-metal tubular bodies provided with holes in their opposite side walls, the combination of a dieor support having a recess therein, a ball adapted to be inserted in the tubular body and placed over a hole in one of the side walls thereof, and a plunger provided with a concave end adapted to be inserted through a hole in the opposite side wall and force the ball through the hole over which it is placed.

4. In apparatus for flangingwrought-rnetal tubular bodies provided with holes in their opposite side walls, the combination of a dieor support having a recess therein, a ball having one flat side and adapted to be inserted in the tubular body and placed over a'hole in one of the walls thereof, and a plunger adapted to be inserted through a hole in the opposite side'wall and force the ball through the hole over which it is placed.

r 5. In apparatus for flan ging wrought-metal tubular bodies provided with holes in their op posite side walls, the combination with a die or support having a recess therein and a die cavity around said recess, of a separate body or implement adapted to be inserted in the tube and placed over a hole in one of the side walls thereof, and a plunger adapted to be inserted through a'hole in the opposite side '7. In apparatus for flan gin gholes in wrought metal tubular bodies, the combination with an internal support or die having recesses,a plunger, and a ball adapted to be forced by said plunger through the holes in the Walls of the tubular body into the recesses in the support or die.

8. In apparatus for flan gin gholes in wrought metal tubular bodies, the combination with a bed die or support provided with recesses, of an internal support or die having openings, a plunger, and a separate body or implement adapted to be forced by the plunger through.

face of the (lie or support, a reciprocating the holes in the walls of thetubular body.

9. In apparatus forflanging holesin tubular: wrought-metal bodies, the combination of a bed die or support having recesses, an internal die or support having openings, aplunger, and a ball adapted to be forced by said plunger through the holes in the Walls of the tubular body and through the openings in the internal die and into the recesses in the bed die or support.

10. In apparatus for flanging holes in wrought-metal tubular bodies, the combinarecesses, of an internal die or support having openings, die-cavities formed "around the openings in said bed die and internal support, of a plunger, and a separate body or implement adapted to be forced by the plunger through the holes in the walls of the tubular body and into the openings in said bed die and internal support.

11. In apparatus for Hanging holes in wrought-metal tubular bodies, the combination of'a die or support having a plurality of recesses therein, a corresponding series of plungers mounted to reciprocate together, and a corresponding number of separate bodies or implements adapted to be inserted in I said tubular body and forced by the plungers through the holes in the walls thereof.

12. In apparatus for fianging holes in wrought-metal tubular bodies, the combination of a die or support having an inclined supporting-face and a plurality of recesses therein, a corresponding series of plungers of varying length to correspond to the inclined cross-head carrying said plungers, and a series of separate bodies or implements corresponding in number to the plungers and adapted to be inserted in the tubular body and forced by the plungers through the holes in the walls thereof.

In testimony whereof I, the said J AMES P. SNEDDON, have hereunto set my hand.

.JAS. P. SNEDDON. 

